Electric signaling apparatus



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ELECTRIC SIGNALING APPARATUS.

No. 487,676. Patented Dec. 6. 1892.,

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ELECTRIC SIGNALING APPARATUS. No. 487,676. Patented Dec. 6, 1892.

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A M. MARTIN. ELECTRIC SIGNALING APPARATUS.

No. 487,676. Patented Dec. 6, 1892.

UNITED STATES PATENT Orrron.

MORRIS MARTIN, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO THE MUNICIPAL SIGNAL COMPANY, OF PORTLAND, MAINE.

ELECTRIC SIGNALING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 487,676, dated December 6, 1892.

Application filed February 20, 1892. Serial No. 42 2,228. (No model.)

To all whom it may concern: may be carried or moved by some part of the Be it known that I, MORRIS MARTIN, of Malpaper-feeding train of the register and the den, county of Middlesex, State of Massachuother member of which is operated by an setts, have invented an Improvement in Elecelectro-magnet in or controlled by the main 5 trio Signaling Apparatus, of which the followcircuit, being, for example, the same armature ing description, in connection with the accomthat operates the marker or stylus of the regpanying drawings, is aspecification, like letister, and the said members of the circuitters and numerals on the drawings representcontroller are so arranged that they can coing like parts. operate only at a given moment in the move- I0 This invention relates to electric signaling ment of the register, and only then on the apparatus, the object being to distinguish bereception of the distinguishing impulse, or tween certain kinds of signals that are reone member of the circuit-controller may be ceived. The transmitting mechanism consists driven by an independent train or be moved of a multiple signal-transmitter constructed by an independent motor-i. a, independent I5 and arranged to transmit a distinguishing imof the register-although the controlling-magpulse in connection with some signals and not net of such train or motor will be governed others, said impulse for the purposes intenddirectly or indirectly by the main circuit. ed being transmitted at a certain specified In instances where several main signalingtime. The receiving apparatus comprises both circuits entera single central station multiple 7o 20 an instrument like an ordinary telegraph-regpen receivers or registers are usually emister that records dot-and-dash signals on a ployed for simplicity, and in such event a traveling strip of paper and an indicatingcircuit-controller for the circuit of the indisignal. It is intended that the register shall eating-signal is provided for each main sigrespond to all signals and that the indicatingnaling-circuit ta, if there should be four sig- 25 signal shall respond to some signals and not naling-circuit-s then there would be four cirto others, and thereby call especial attention cuit-controllers. The motor-driven members to certain signals received, but not to others. of said circuit-controllers are herein shown An apparatus of this kind is exceedingly useas adapted to be driven by the same motor, ful for police-signaling purposes where cerand hence are arranged side by side on a 3o tain signals require an immediate answer and shaft, but normally restrained from revolv-- others require no answer whatever. ing therewith, and the co-operating members One object of the present invention is to of said circuit-controllers are controlled indeenable signals containing both dots and pendently by the pen-controlling magnets, dashes, or either of them, to be either espewhich are in turn controlled by the respect- 8 3 5 cially indicated or not, as required, and in the ive signaling-circuits.

present invention the operation of the indi- Figure 1 shows in plan view the operating eating-signal depends upon the condition of mechanism of a telegraph-register embodying the transmitting-current or a change efiected this invention, it being arranged in connectherein at a certain moment in or during the tion with four circuits, the top portion of the 4.0 transmission of a signal. Forinstance, if the inclosing case being removed to expose the main circuitisclosed atsuch momenttherewill operating parts; Fig. 2, a vertical section of be no special indication; but if the main cirthe register shown in Fig. 1, taken on the cuit is open at this particular time there will dotted line a: m; Fig. 3, a vertical section of be a special indication, and the condition of the register shown in Fig. 1, taken on the 5 45 the main circuit or any changes therein at all dottedline y y; Fig. 4, a detail of one member other times during the transmission of a sigof one of circuit-controllers; Fig. 5, a dianal will have no effect on the special indicator. grammatical view showing the circuit of the As a way of accomplishing this result in acfour-pen register represented in Fig. 1; Fig. cordance with the present invention the re- 6, a modified form of registerarranged in con- 50 ceiving instrument or register is provided nection with a single circuit, also showing in with a circuit-controller, one member of which, diagram the circuits and other instruments employed in connection therewith to make a complete apparatus; Fig.7, another modification showing the register in a metallic circuit and the circuit-controller of theindieating-signal governed by an independent motor, and Fig. 8 another modification to be referred to.

The train of Wheelwork, which may be of any suitable construction, is contained in the inclosing case, being normally wound up and provided with an escape-wheel or other suitable regulator 11. A stop-leverb', pivoted at 12 has a projection b which enters a notch in a stop-wheel on one of the shafts of the train. Projecting from said stop lever is a short arm I)", having a detent D which engages the teeth of the escape-wheel. An electro'magnet A is suitably supported in the inclosing case, the armature a of which is attached to a lever a pivoted at a, the upper end of said lever having an outwardly-projecting arm a which engages the short arm I) on the stop-lever and lifts it out of engagement with the stop-wheel to let off the normally wound-up train. The feed-rolls c c are driven by the said train of wheel-work to feed the paper forward.

The register herein represented is adapted to be operated or controlled by four separate signaling-circuits, and hence four electromagnets g g g g are arranged side by side or otherwise, the armatures of which are attached, respectively, to the armature-levers f f f f pivoted to the rod or bar said armature-levers each carrying a stylus e, by means of which the paper is marked with dot-and-dash signals, as the case may be, as usual.

Loosely mounted on the shaft h are four disks h, of insulating material, each having a projection, as 7L2, which by striking against the outer ends of the armature-levers are held stationary, while the shaft h may rotate within it. Friction-plates are arranged on the shaft h, which bear against the said disks, so that when they are released they will turn with the shaft. A metallic band h is secured to one side or face of the disk h, against which bears a contact-pen, as h, and mounted on the periphery of the disk at a short distance beyond the projection 7L2 is a metallic projection 7L which is formed integral with or electrically connected with the baud h Referring to Fig. 5, four main signalingcircuits 1 2 3 4 are shown, which mayinclude or contain signal-boxes of any suitable construction, said circuits also each containing a receiving-relay, as r r 1' W, and being represented as metallic circuits the armatures of said relays are attracted. The armature of the relay 7" when retracted falls against a contact, to which is connected a branch wire w, which wire includes the coils of the penmagnet g and is connected to wire to, which includes the coils of the starting-magnet A and is connected with one pole of the battery B The said armature is itself connected with a wire 'w which is connected with the other pole of said battery, so that when said armature retracts it will be seen that the local circuit to w w is closed, the armatures of the starting-magnet A and pen-magnet g attracted, thereby letting off the train of the register, and by means of the stylus on the armature-lever of the pen-magnet marking the paper. The armatures of the relays 0' r 9' are connected to the wire 10 and when retracted close on contacts connected, respectively, with wires 10 w to, all of which are connected to the wire w, and the pen-magnets g g g are respectively included in said wires to w 10 so that whichever receivingrelay is effected the starting-magnet A will operate, and that one of the pen-magnets which is included in the branch wire connected to the contact against which the armature of the effected relay strikes.

The disks h, which are mounted on the shaft h, are also represented in Fig. 5, said disks being restrained from rotation by the armature-levers of the pen-magnets, as shown, and the pens h, which bear against the metallic side or face of said disks, are connected by wires to the wire a, which is connected to one side of the local battery B and the armature-levers of the pen-magnets are connected by a wire u to the other side of said battery, and a bell a or other indicating signal is contained in said local circuit adapted to respond whenever said circuit is closed. Whenever one of the pen-magnets operates, its armature-lever being turned on its pivot releases the disk which it has been holding, permitting it to rotate with the shaft h, and as the disk revolves the projection 72, thereon passes beneath the end 20 of the armaturelever, and said projection is made of the proper length, so that if the armature is held attracted it will pass beneath the end of the lever without touching; but if at the time that said projection arrives beneath the end of said lever the armature should be retracted or in its retracted position a suitable contact is made, whereby the local circuit of the battery B is closed and the hell if thereby caused to respond.

The projection 7L5 and the end of the armature-lever,as herein represented,constitute the circuit-controller which controls the local circuit. Each disk, it will be seen,is controlled by its own pen-magnet, so that the local circuit containing the bell will be controlled by the several pen-magnets independently. By this arrangement it will be seen that one of the projections 7L passes beneath the end of the armature-lever at a certain definite time after the registerstarts, and if at this moment the end 20 of the armature-lever is retained in one position by the main circuitas, for example, if the main circuit is opened and the armature of the magnet g attracted-the said member 20 of the circuit-controller will not co-operate to efiect the local or special signaling-circuit, and the message that is re-' IOC corded on the strip 01 will be unaccompanied by any special signal or indication. If, however, the main circuit is in the other condition or changed at this moment and the armature of the magnet 9 thereby retracted, the members 20 It will co-operate and effect the local circuit, so that the alarm or special signal will be sounded and attention called to the message, which is subsequently recorded on the tape. The engagement of the member 20 with the periphery of the wheel h after the conducting portion h has passed by produces no eif'eet on the local circuit, as said wheel is made of insulating material.

It will be seen that the operation of the special signal does not depend on any difference in the character of the currents transmitted, or even on the duration of currents of uniform character, and precisely the same message can be transmitted, if desired, ac companied by the special signal or unaccompanied by it, it being necessary only to maintain the proper condition of the main circuit at the time that the member 77, passes beneath the member 20, which is immediately after the register starts. The main circuit 3 is shown as containing a number of transmit-ting brake-Wheels p 19 19 the one of which marked 13 will cause the circuit to be broken at the proper moment to transmit the distinguishin g impulse or that impulse which causes the members 20 71 of the circuit-controller to' co-operate and effect the operation of the indicating-signal, while the other wheels 19 10 are not designed to transmit such a distinguishing impulse. The transmitters of the other main circuits will be formed in substantially this same manner.

It is not essential to the invention that the message should be a dot-and-dash message on a traveling'strip by a stylus, as any other kind of a message might be used,it being cssential only that there should be a motor at the receiving-station to move the member if of the circuit-controller with a sufficientlyaccurately-timed movement and that the corresponding member 20 should be controlled by the circuit from the transmitting-station by said distinguishing impulse, which will be transmitted at the proper time to cause the member 20 to engage the member 71 some time during the short interval of time that it is in proper position.

In Fig. 6 a single pen-register is shown wherein the stylus e, which does the marking, is carried by the armature-leverf of an electro-magnet, which likewise serves as the starting-magnet, it having at its end a projection f which enters a recess in a stop-wheel. The stop-wheel is herein represented as made of insulating material and as having on it a conducting-piece m, which as the stop-wheel revolves comes beneath a projection on the armature-lever. The piece m and projection on the armature-lever in this instance form the members of the circuit-controller of the local circuit containing the battery B and bell a The armature of the bell is represented as holding in normal elevated position a drop 1, which when released falls on a contact 9 and closes a branch wire 8 around the battery B The electro-magnet g is in this instance contained in an open ground-circuit, which also contains a multiple signal-transmitter p p p arranged to operate or efiectsubstantially the same result in connection with the register herein shown as is efiected by the transmitter shown in Fig. 5.

In Fig. 7 a metallic circuit is shown instead of a ground-circuit and the circuit-controller m f is arranged on and in connection with p a motor F independent of the train of the register, said motor F being released by a magnet g, connected in or with the main circuit.

The indicating-signal u is represented as a tap-bell and included in the local circuit containing the battery B In Fig. 8,11 represents the stop-wheel of the motor, and m the movable member of the operating device for the indicating-signal, it being arranged on the wheel m In this instance the first change in the circuit starts the train and the member f is thrown into contact with the wheel m and if'the change is of long duration the circuit by m f is made, or if any change in the main circuit is made during a predetermined interval of time the same result follows. Thus the initial impulse or the one used to start the train may be used to cause the bell to respond, if desired.

The member m may be of any desired length, so that the interval of time during which the bell can be sounded may be Varied, or the same result may be produced by varying the speed of the train. In Fig. 8 the controlling member is shown as comprising nearly onehalf the periphery of the wheel m Thus it will be seen that my invention is easily applied to other forms of multiple-pen or single-pen registers, and I do not desire to limit my invention to the particular construction of parts by which such application is made.

I claim- 1. A signal-receiving instrument comprising a paper-feeding train of wheelwork and an electro-magnet and armature controlled by the transmitting-circui t, combined with a circuit-controller, one member of which is operated by said train of wheelwork and the other member of which is operated by said electromagnet, substantially as and for the purposes set forth.

2. In an electric signaling apparatus, multiple signal-transmitters at sub-stations constructed and arranged to transmit a distinguishing impulse with some and not with other signals, a message-receiving instrument at the central station and an electric circuit connecting them, an electro-magnetically-operating indicating-signal and circuit-controller for said indicating-signal, one of the members of which is controlled bya magnet effected by the distinguishing impulse and the other IIO member of which is moved by a motor mechanism into position to co-operate with said electro-magnetically-movable member for a short time only, after which co-operation is not possible, whereby the indicating-signal may be sounded with some signals and not others, substantially as described.

3. In an electric signaling apparatus, signal-transmitting instruments at sub-stations and a message-receiving instrument at a central station, and an indicatingsignal also at said central station, combined with a plurality of circuit-controllers which control the circuit of said indicating-signahoue of the members of which is operated by a time-train and the other by an electro-magnet, substantially as described.

4. In an electric signaling apparatus, mul- 

